Who is the speaker addressing and why can that person not hear or understand what she is saying?
The speaker is addressing to her husband. That person cannot hear nor understand what she is saying because he is not alive.
In what ways do you think this person's fate has affected the speaker?
This person i.e. speaker's husband died in the war. As she has lost her husband, the speaker is alone in this world and she needs to bear all the sufferings. In this way, the person's fate has affected the speaker.